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Pennsylvania Railroad Company's drop testing machine for cast iron car wheels
Testing steel for Marine engine construction
A new Brinell hardness testing machine
Origin and development of the Pennsylvania R. R. testing laboratory
Compressive Strength of Tapered Airplane Struts
Junkers Airplane "G 24" : All-metal Commercial Airplane
Identification of Aircraft Tubing by Rockwell Test
Because it's tested, millions travel safely -- H
Evolution of southwark-Emery testing machine
Wings with Variable Camber and Slots
Results of tests on Portland cement of recent production
Preliminary Wind-Tunnel and Flight Tests of a Balanced Split Flap, Special Report